Scraping apparatus for furnaces



A. MAXWELL.

SCRAPING APPARATUS FOR FURNACES.

APPLICATION FILED MAR. 1a, 1920.

1,362,336. Patented Dec.14,1920.

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UNITED STATES .PATENT OFFICE.

ARCHIBALD MAXXVELL, OF WOODLAWN, PENNSYLVANIA.

SGRAPING APPARATUS FOR FURNACES.

Application filed. March L8, 1920.

T 0 all w ham it may concern:

Be it known that l, AnoHIBALD MAXWELL, a subject of the King of Great Britain, residing at VVoodlawn, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Scraping Apparatus for Furnaces, of which the following is a specification.

My invention consists of an improvement in scraping devices for removing the l111- ings, etc. of open hearth and other furnaces. It has for its object to provide a scraper which may be mounted upon and used in connection with the usual charging peel so as to utilize it as a base and also the various movements thereof, either inwardly and outwardly, or laterally, as well. as the vertical and other adjustments of the peel, to apply scraping and removing force to the already loose and adhering surface material.

Ordinarily, furnace linings together with the accumulated loosened material, 2'. 6., facing, brick, mortar, etc., are removed by manual operations under very severe heat conditions and are very laborious. By my invention, I provide a scraper capable of be ing mounted upon the peel, which may be introduced through the usual door openings of the furnace between the jambs, and may be manipulated by the operating mechanism of the peel to scrape the surface, gather the loosened contents, and remove them outwardly through the door openings at a very considerable reduction in time, obviating the necessity of exposure of the workman to the heat, and at a Very considerably reduced expense.

Referring to the drawings, illustrating one preferred embodiment of the invention,-

Figure l is a view in elevation, partly in section, of the device as mounted upon the peel;

Fig. 2 is an inner end view in elevation;

Fig. 3 is a plan view of Fig. 1;

Fig. l is a view similar to Fig. 1, but showing one of the scrapers adjusted for lateral action; and

Fig. 5 is a View in end elevation of Fig. 4.

In the drawings, A represents the inner attaching end of the usual charging machine peel, adapted to be used in connection with a box, blade, slab, or other usual metal supporting and mampulating mem- Specification of Letters Patent.

Patented Dec. 14; 1920.

Serial No. 366,932.

her. The scraper as a whole, generally indicated by the letter B, consists of three prmc pal parts, to wit, the usual peel constituting a slab or base 2, a main scraper member 3, and a supplemental adjustable scraper member 4-. Base 2, as shown, is provided with an inner terminal socket 5 of a construction adapted to make a rigid connection with the securing terminal a of the peel shank s, as will be obvious from the drawing. Base 2- extends inwardly beyond the socket in the form of a flat supporting slab, and is provided with a series of bolt holes, suitably arranged for connection, as by bolts 6, with the main scraper member 3, which preferably seats by its inner terminal snugly against the outer face of socket portion 5, as indicated at 7. By this construction and connections, the base 2 and scraper 3 are firmly and rigidly connected together.

Scraper o is provided at its outer portion with a downwardly turned hoe member 8 preferably having a series of dividing spaces 9, and a corresponding plurality of separate teeth members 10, as shown, for engagement with the surface of a furnace lining or of the loose separated material for removal thereof by manipulation of the peel member inwardly or outwardly, in the manner of a hoe or rake.

Scraper member 4, which is superimposed upon scraper 3, is of the same general construction as to its outer operative portion 11, and extends by its teeth members in a direction opposite to the teeth or the scraping edge of member 8. Scraper 4c is secured to scraper 3 by four bolts 12, located equidistant apart and in rectangular formation, flS-SllOlVll, two of which bolts extend through the shank members of scrapers i and 3, and

also of base 2, and fixedly connect the several members together. The other two bolts extend through the shank members of scrapers i and 3 only, connecting them together independent of the base 2.

By such arrangement of bolts 12, I am enabled to adjust the scraper 4 in the manner shown in Figs. 4 and 5, z. 6., by removal of the bolts and shifting the scraper around upon scraper 3, and again securing the bolts, its scraping portion 11 assumes the position at right angles to its former position, and also with relation to the companion scraper 3 and its operative terminals. By this construction and arrangement, the device is capable of operating when swung laterally, it being understood that the scraper is easily reversed to bring either terminal into operative relation to the floor of the furnace, by merely reversing the peel A axially, as is a well known function of such mechanism.

While the terminals 10 are shown as beveled, they may, of course, be made blunt or square, or of any other preferred form, and the invention is in no way limited as to the particular form of the scraping edge.

The device as a whole is comparatively simple, very strong and durable, easily adjusted and used, and is capable of a wide range of application and utilization in work of the kind indicated. It may be variously changed or modified in detail construction, or otherwise, by the skilled mechanic, but all such. changes are to be considered as within the scope of the following claims.

What I claim is:

l. A scraper consisting of a longitudinally disposed fiat supporting base, a primary scraper member secured thereon, and a secondary scraper member secured to the primary scraper.

2. A scraper consisting of a longitudinally disposed flat supporting base, a primary scraper member secured thereon, and a secondary scraper member secured to the base and the primary scraper.

3. A scraper consisting of a supporting base, a primary scraper member secured thereon, and a secondary scraper member secured to the base and the primary scraper, the secondary scraper having an angularly deflected operative terminal extending in the opposite direction from the terminal of the primary scraper.

L-A. scraper consisting of a supporting base, a primary scraper member secured thereon, and a secondary scraper member secured to the base and the primary scraper,

the secondary scraper being capable of adjustment upon the primary scraper and base for either longitudinal or lateral operation.

5. In combination, a base having an inner peel connecting socket and an outer supporting slab portion, a primary scraper secured thereon having a downwardly extending terminal, and a secondary scraper secured to the primary scraper and said slab portion, and provided with an oppositely extending terminal.

6. In combination, a base having an inner peel connecting socket and an outer supporting slab portion, a primary scraper secured thereon having a downwardly extending terminal, and a secondary scraper secured to the primary scraper and said slab portion, and provided with an oppositely extending terminal, said scrapers having rectangularly located bolt holes through their shank portions adapting the secondary scraper for adjustment on and connection with the primary scraper.

'7. in con'ibination, a supporting base having an outer flat supporting slab portion, a primary scraper secured thereon having a downwardly extending terminal, and a secondary scraper secured to the primary scraper and provided with an oppositely extending terminal.

8. A scraper of the class described comprising a flat supporting base, a primary scraper member secured thereon, and a secondary scraper member mounted on the primary scraper, said scraper members havrectangularly located bolt holes adapting the secondary member for adjustment on and connection with the primary member.

In testimony whereof I hereunto aflix my signature.

ARCHIBALD MAXl VELL. 

